公开(公告)号：DK0763030T3

公开(公告)日：1999-08-30

申请号：DK95921795

申请日：1995-05-31

Applicant: BASF AG

Inventor： FISCHER ROLF ,  SCHNURR WERNER ,  IRGANG MATTHIAS ,  WULFF-DIRING JOACHIM ,  NEUHAUSER HORST

IPC: C07D307/12 ,  B01J23/34 ,  C07D309/04 ,  C07D309/06

Abstract: PCT No. PCT/EP95/02071 Sec. 371 Date Feb. 20, 1997 Sec. 102(e) Date Feb. 20, 1997 PCT Filed May 31, 1995 PCT Pub. No. WO95/33741 PCT Pub. Date Dec. 14, 1995Preparation of heterocyclic aldehydes I (I) (A, B=optionally substituted methylene groups; +E,uns m+EE , +E,uns n+EE =1 to 5; +E,uns m+EE ++E,uns n+EE >2), by hydrogenation of carboxylic acids IIa (IIa) or one of their esters IIb derived from a C1-C10 alcohol, at a temperature of from 200 DEG to 450 DEG C. over a catalyst. The end products are suitable as intermediates for herbicides of the cyclohexanone class.